Pittsburgh Lock Forming Machine

Hardened forming rollers are precision-machined to produce Pittsburgh lock profiles with tight dimensional tolerances, ensuring each seam interlocks cleanly without rework. The result is stronger duct joints with reduced air leakage — critical for systems that must meet pressure class specifications.

The machine handles sheet thicknesses from 0.5 mm to 1.2 mm, covering galvanized steel, cold-rolled steel, and aluminum commonly used in HVAC rectangular ductwork. A single setup accommodates different material gauges without time-consuming roller changes.

Four casters with brakes allow one or two operators to reposition the 210 kg machine across the shop floor. Despite its mobility, the fabricated steel cabinet base and integrated work table provide the rigidity needed for vibration-free forming during continuous operation.

An external control switch gives the operator direct start/stop control. The drive system — powered by a 1.5 kW motor — uses a straightforward mechanical transmission with minimal wearing parts, keeping scheduled maintenance limited to periodic lubrication and roller inspection.

NTBOBO holds over 300 sets of moulds and operates a dedicated R&D center with engineers averaging 15+ years of industry experience. Spare rollers, replacement parts, and technical guidance are available through a well-established global export network serving clients including Midea, Daikin, and Bosch.